CVE-2026-24132: Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-24132 is a critical-severity flaw (CVSS 9.8) affecting orval. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions 7.19.0 and below and 8.0.0-rc.0 through 8.0.2 allow untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScript into generated mock files via the const keyword on schema properties. These const values are interpolated into the mock scalar generator (getMockScalar in packages/mock/src/faker/getters/scalar.ts) without pr

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 45%)
CISA exploited list	No
Weakness	CWE-77, CWE-94
Published	2026-01-23
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: orval

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-01-23 00:15 UTCPublished CVE record published
2026-06-17 10:22 UTCUpdated Record last modified

orval orval UPGRADE

Affected: >= 6.0.0 and < 7.20.0 · >= 8.0.0 and < 8.0.3

Fixed in: 7.20.0, 8.0.3

Safe to downgrade to: a release before 6.0.0

1. Check installed version

apt-cache policy orval || rpm -q orval || orval --version

2. UPGRADE to 7.20.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade orval

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade orval

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 6.0.0 (Debian / Ubuntu)

apt-cache madison orval sudo apt install orval=<VERSION_BEFORE_6.0.0> sudo apt-mark hold orval

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list orval sudo dnf downgrade orval-<VERSION_BEFORE_6.0.0> sudo dnf versionlock add orval

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-24132?

orval: upgrade to 7.20.0, 8.0.3. Exact commands for each OS are on this page.

Is CVE-2026-24132 being exploited?

CVE-2026-24132 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-24132 affect?

CVE-2026-24132 affects orval. Severity is critical (CVSS 9.8). Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions 7.19.0 and below and 8.0.0-rc.0 through 8.0.2 allow untrusted OpenAPI specifications to inject arbitrary TypeScript/JavaScrip

How urgent is CVE-2026-24132?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-22785 CRITICAL 9.8 UPGRADE orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification

References

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